DOL 434 LPV
Technical Manual
57
The combined curve values can also be seen in the menu
| Technical | Service | Negative pressure | Pressure
curve
. However, we recommend that you use the other menu
where it is also possible to see how the adjustments affect air
inlets and outlets.
6.6.3 Using two curves for air inlets (side and tunnel)
The climate controller can adjust both side and tunnel inlets according to two different pressure curves.
The is an advantage in, for example, long tunnel houses. By opening the front tunnel inlets first and then open-
ing the next tunnel inlets with a delay, it is easier to reach sufficient air speed and air exchange in the entire live-
stock house.
Tunnel - inlet 1
Tunnel - inlet 2
Figure 21: Example of a house with two separate tunnel inlets that are regulated according to their respective curves.
Two separate curves must be set to allow the air inlets to be ad-
justed independently.
Each inlet must be set up with the curve it is adjusted according
to.
At side air inlets:
When using two curves and the
De-icing air inlet
function, note
that de-icing will be active alternately for the air inlets for curve
1 and curve 2.
6.6.4 Setting change between roof and side ventilation
The default setting of the side curve makes it start at 0%.
When the controller is set up with roof ventilation, it is therefore important to change the side curve so it starts
as a minimum at the last output point of the roof curve.
By making a step between the last point of the roof curve and the first point of the Side curve - e.g. from 25% to
30% - it is possible to create a dead band in the ventilation which makes the transition between the two modes
more smooth.
